Rheem SP20166B Combination Natural Gas Valve

The Rheem SP20166B Combination Natural Gas Valve is a Rheem gas valve for HVAC repair and replacement work. Use it when the part number SP20166B and the listed specifications match the equipment being serviced.

Combination Natural Gas Valve Kit Includes: AP14270G-1 : 1 Gas Control (Thermostat) – NG AP14328 : 1 Use & Care Manual AX4774 1 Lighting Instructions Used on the following Rheem Ruud natural gas models: 22V40 PROF, P2-40 PROF, 22V50 PROF, P2-50 PROF, 42V40SPROF, PH2-40SPROF, 42V50SPROF, PH2-50SPROF Replaces: AP8555S-1, SP8555S **Images may not represent actual product.**

Key Specs

• Product Type: Gas Valve

Expert Verdict

Reviewed by the SuperArbor Pro Desk: choose this part when the existing component label and unit documentation match SP20166B and the spec set above. It is best suited for targeted HVAC service repairs where exact fitment matters more than broad universal compatibility.

FAQs

What is the Rheem SP20166B used for?

It is a gas valve for compatible Rheem HVAC equipment. Match the part number SP20166B and the equipment service literature before ordering or installing.

Which specs should I verify before purchase?

Verify the spec set shown for this part: Product Type: Gas Valve. The replacement should match the existing component and the unit documentation.

How do I confirm this is the right replacement?

Compare the part number SP20166B, the gas valve description, and any unit model references with the original component and the service manual.

Is this an OEM-style replacement part?

Use it as a direct replacement only when Rheem documentation lists SP20166B or an approved equivalent for the unit being serviced.

Who should install this HVAC component?

A qualified HVAC technician should install and test the gas valve. Disconnect power first, follow lockout procedures, and confirm safe operation after replacement.

Safety and Installation Notes

Disconnect power before service. HVAC electrical and combustion-related components should be installed and tested by a qualified technician. After installation, confirm wiring, mounting, airflow or fluid routing as applicable, and normal system operation.